Fastening means for traction devices



E. H. LICHTENBERG FASTENING MEANS FOR TRACTION DEVICES Sept. 22, 1925. I1,554,286

Filed March 21. 1925 Patented Sept 22, 1925.

UNITED STATES ERICK HZ. LICHTENBEBG, F MILWAUKEE PANY, 0]? MILWAUKEE,

WISCONSIN, ASSIGNOR TO KCEHBING COH- WISCONSIN, A CORPORATION.

FASTENING MEANS FOR TRACTION DEVICES.

Application filed March 21, 1925. Serial No. 17,888.-

To all whom it may concern Be it known that I, ERICH H. LIOHTEN- BERG,citizen of the United States, residing at Milwaukee, in the county ofMilwaukee and State of Wisconsin, have invented certain'new and usefulImprovements in Fastening Means for TractionDevices, of which thefollowing is a specification.

The present invention has to do with the re mounting of machine framesor bodies of portable machines, upon the traction elements of devices bywhich the are to be supported and rendered movab e. vention involves inits direct application means for soconnecting the traction frame, so tospeak, such as employed for endless tractors, by which a machine may besupported to travel, with the body frame. Broadly there are at least twotraction 1 frames equipped with endless tractors, treads or belts, atopposite sides of the body frame. These tractors are attached to thebody frames by means of shafts mounted in suitable bearings on the bodyframe and passing through the traction frame or frames customarilyprovided at the opposite ends of the shaft or shafts employed. It

, has been found that in ordinary assemblage of body and traction framesaforesaid, and

the shafts forming the connections between them a certain amount of playexists intermediatefithe traction frame parts and the 3 body frameparts, due largely to the fact that same are composed of castings andmust beassembled with some allowances for inaccuracy in the formation.of the associated parts. v The present invention involves a, provislonof a'simple means in the form of a cap or attachment applicable to theends of the shafts and including wedging or camming parts for forcingthe body and traction frames into fairly close abutment so as to avoidthe looseness and play above referred to.

A full understanding of the invention, its merits, and construction,will be had upon reference to the accompanying drawings in which:

Fi rel is a fragmentary sectional view showmg portions of the body frameof a large machine and a connected traction frame, and illustrating-thewedging device of the invention as used herewith;

Figure 2 is a horizontal sectional view of The in a side elevation ofcertain parts shown in Fig. 1 and illustratin the outside channel memberor side of t e traction frame in section;

Figure 3 is a vertical sectional view taken about on line 3-3, of Fi 2;

Figure 4 is a details sectional view of the stationary abutment memberof the wedge device; p

Figure 5 is a side view of the same;

Figure 6 is a plan view of one of the movable abutment members; and

Figure 7 is a side view of the member shown in Figure 6.

Similar reference characters refer to like parts throughout thisspecification and the drawings.

A in the accompanying drawings denotes a portion of the body frame of alarge structure, crane, paver, or heavy machine of that type, and Bdenotes an integral bearing extension projecting forwardly from saidframe at a side thereof and through which the shaft 1 passes. The shaft1 connects the body frame A with the traction frame C, which tractionframe includes the spaced channels 2 and the castings or members 3 atthe outer and inner sides of said channels 2 and riveted thereto. Theparts of the traction frame C are assembled or fabricated in any wellknown manner.

The particular form of the body frame A, and the traction frame C, arefeatures immaterial to the present invention.

The means for holdin the traction frame C in proper relation to t e mainbody frame comprises a device applied to the outer end of the shaft 1 asseen in Figure 1, but one of which would be applied to the opposite endsof said shaft in practice. This device is of sectional construction inthat it composes an outer relatively stationary wedging head abutmentmember 4: having a recess 5 in which the extremity of the shaft 1 fits,and formed with side portions 6 rovided with apertures-7 and having incmes or cam faces 8 virtually on the inner edges of the side portions.The stationary head or abutment 4 is pinned or otherwise ri idlyattached to the shaft 1 as by means 0 the pin 9 that passes through an oening formed transversely through the she 1 and which pin also passesthrough the apertures 7 of the abutment 4.

For coaction with the abutment 4 the device now being described includesrelative-' ly movable abutment members it), two of which are usedandwhich are of like formations seen best in Figures 6 aml 7. Each member10 is of curved form and is provided with what may be characterized as aflat side 10 and an inclined or cam side it At its ends the member 1 isformed with projections 10, provided with openings theretln'ough.

The two members lt are assembled so as to extend partially about theshaft 10 at opposite sides thereof and between the abutment 4 and theadjacent collar member or extension 3 of the traction frame Bolts 11 areused to connect the members 10 together, are located at opposite sidesof the shaft 1 and the side members and passed through the openings inthe projections 10 previously mentioned. For proper cooperation betweenthe cannning or wedging members 10 which are the movable abutments, andthe member 1, the cam sides or inclines 10 are caused to contact withthe inclines 8 of the abutment 4. The tightening member of the bolts 11will necessarily cause a wedging action of the members 10 between theadjacent part 3 and the abutment 4, thus pushing the traction frame andthe. body frame firmly together so that the inner casting 3 of thetraction frame. abuts with the bearing member B, and the body andtraction frames are assembled without looseness therebetween when amachine of this type is put out from the factory.

If, in the course of time and use of the machine, wear takes placebetween the parts 3 and B or between the outside member 21 and the parts10. it is evident that the mo\'-' able abutments 10 may be tightened upor drawn closer together to eliminate said play or looseness incident towear.

In order to prevent the axle l. and the parts 4 and 10, from turning inthe bearings provided therefor in the multiplane frame casting 3, thewedging head abutment memher 4, formed with lugs 4 at opposite sidesthereof, which lugs fit into recesses 3 formed in said casting 3. .\sthe casting 3 is riveted to the frame member 2 of the traction frame,and is therefore inunovable, it will be obvious that the head orabutment member 4 is prevented from turning. The members 4 being pinnedon to the shaftv 1, said shaft is also in this manner prevented fromturning.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is: i

1. In combination, a body frame, a traction frame, a shaft forsupporting and connecting said frames while in adjacent relation, meansfor holding the body frame and traction frame in close relation to oneanother when assembled with said shaft, in-

eluding an abutment applied to the shaft, and cannning means betweensaid abutment and the traction frame.

2-. In combination, a body frame, a t'action frame, a shaft forsupporting and connecting said frames while in adjacent relation, meansfor holding the. body frame and traction frame in close relation to oneanother when assembled with said shaft, in cluding an abutment appliedto the shaft, and camming means between said abutment and the tractionframe, comprising an abut-- ment movable between the above mentionedabutment and the traction frame, and means for actuating said movableabutment.

3. In combination, a body frame, a traction frame, a shaft forconnectingsaid frames together and assembled therewith, a relatively stationaryabutment on said shaft, and a relatively movable abutment for cummingengagement with said relatively stationary abutment, and interposedbetween itand the traction frame, and means for actuating saidrelatively movable abutment.

4. In combination, a body frame, a traction frame, a shaft forconnecting said frame together and assembled therewith, a relativelystationary abutmenton said shaft, and a relatively movable abutment forcamming engagement with said relatively stationary abutment, amlinterposed between it and the traction frame, and means for actuatingsaid relatively movableabutment, including a part adjacent to said shaftand having bolt connections with the movable abutment for causingcamming movement of the latter between the stationary abutment and thetraction frame.

In combination, a body frame, a traction frame, a shaft assembled so asto connect said frames, and means for holding the traction frame tightlyagainst the body frame including an attachment applied to an end of saidshaft, said attachment comprising an outer stationary abutment mem berfixed to the shaft, relatively movable abutment members between thetraction frame and said stationary abutment member, the stationary andmovable abutment members having coacting inclines forming cammingsurfaces engaging one another, and fastcnings connecting the movableabutment members while disposed on opposite sides of the shaft andadapted to actuate said abutment members for \vedging movement betweenthe traction frame and stationarv abutment member, substantiallv as described. U

(.3. In combination. a body frame, a traction frame, a shaft forsupporting and connecting said frame while in adjacent relation, meansfor holding the body frame and traction frame in close relation to oneanother when assembled with said shaft, in

eluding anabutment applied to the shaft, and camming means between saidabutment and the traction frame, and means for interlocking the abutmentwith the traction frame. I

'7. In combination, a body frame, a traction frame, a shaft forsupporting and connecting said frame while in adjacent relation, meansfor holding the body frame and traction frame in close-relation to oneanother when assembled with said shaft, in-

cluding an abutment applied to the shaft, and camming means between saidabutment and the traction frame, and means for interlocking the abutmentwith the traction frame, and means for connecting the said abutment withthe shaft whereby turning of the latter is prevented.

. In testimony whereof I aflix my signature.

ERICH H. LICHTENBERG.

